package chixing.day09.work;

public class Test {
    public static void main(String[] args) {
        Music music = new Music("打上花火","123");
        Video video = new Video("Hello,World" ,"233");

        music.play();
        video.play();

        music.stop();
        video.stop();

        music.download("qqMusic");
        video.download("tecent");
    }

}
